Home / 9,330.72-12,876.48-5,139.04

Finding the Fourth Proportional to 9,330.72, 12,876.48 and 5,139.04

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Solution

The fourth proportional to 9,330.72, 12,876.48 and 5,139.04 is: 7,091.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.72 : 12,876.48 = 5,139.04 : x
  2. Step 2: Convert to fraction form
    9,330.72/12,876.48 = 5,139.04/x
  3. Step 3: Cross multiply
    9,330.72x = 12,876.48 × 5,139.04
  4. Step 4: Simplify right side
    9,330.72x = 66,172,745.78
  5. Step 5: Solve for x
    x = 66,172,745.78/9,330.72
  6. Step 6: Final answer
    x = 7,091.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.